var animating = false;


function slideNext() {
	if(animating == false)
	{
		animating = true;
		
	    var $active = $('#slideshow IMG.active');

	    if ( $active.length == 0 ) $active = $('#slideshow IMG:last');
	
	    var $next =  $active.next().length ? $active.next() : $('#slideshow IMG:first');
	
	    $active.addClass('last-active');
	
	    $next.css({opacity: 0.0})
	        .addClass('active')
	        .animate({opacity: 1.0}, 1000, function() {
	        	animating = false;
	            $active.removeClass('active last-active');
	        });
    }
}

function slideBack() {
	if(animating == false)
	{
		animating = true;
		
	    var $active = $('#slideshow IMG.active');

	    if ( $active.length == 0 ) $active = $('#slideshow IMG:first');
	
	    var $back =  $active.prev().length ? $active.prev() : $('#slideshow IMG:last');
	
	    $active.addClass('last-active');
	
	    $back.css({opacity: 0.0})
	        .addClass('active')
	        .animate({opacity: 1.0}, 1000, function() {
	        	animating = false;
	            $active.removeClass('active last-active');
	        });
    }
}